The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 08, 2019
Filed:
Jun. 01, 2011
Applicants:
Thomas Östling, Eskilstuna, SE;
Linda Göthlin, Stora Mellösa, SE;
Inventors:
Thomas Östling, Eskilstuna, SE;
Linda Göthlin, Stora Mellösa, SE;
Assignee:
Epiroc Rock Drills Aktiebolag, Orebro, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D 1/00 (2006.01); E21B 17/03 (2006.01); F16D 1/10 (2006.01);
U.S. Cl.
CPC ...
E21B 17/03 (2013.01); F16D 2001/103 (2013.01); Y10T 403/7026 (2015.01); Y10T 403/7035 (2015.01);
Abstract
A driver () for the transfer of torque and rotation from a rotation chuck () to a drill steel (), whereby the cross-section of the driver () is limited outwards by curves, in particular by arcs, united to form a closed FIG.that can be approximately described as a polygon, and limited inwards by splines (). The FIG.comprises four sides () and four corners (). The splines () comprise a number of spline teeth (), the number of which is divisible by four.